<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        span {
            /*margin: 100px;*/
            /*padding: 100px;*/
            line-height: 100px;
        }
    </style>
</head>
<body>
<!--如果想要通过margin 或padding 改变行内标签的垂直位置，无法生效-->
<!--行内标签的margin-top 盒bottom不生效-->
<!--行内标签的padding-top 盒bottom不生效-->
<span> span</span>
<span> span</span>
</body>
</html>